Duplex ventilating hot-air cabinet-furnace.



P. J. MONTGOMERY.

' DUPLEX VBNTILATING HOT Am CABINET PURNACE. N

APPLICATION FILED MAR. 22, 12112IA Patented Jan. 28, 1913.

l PHINEAS J'. `MONTGOMERY, OF SANTA MONICA, CALIFORNIA.

yDUPLEX VENTILATING HOT-AIR CABINET-FURNACE.

Specification. of Letters Patent.

Patented Jan. 28, 1913.

Application led March 22, 1912. Serial N o. 685,619.

To all 'whom it may concern Be it known that I, PmNEAs JAMES MONTGOMERY,a citizen of theUnited States, residing atSanta Monica, in the county ofLosIA-n eles and State of California have inventer a new and usefulDuplex lentilating Hot-Air Cabnet-Furnace, of which the following is aspecification.

An object of this invention is to provide cheap, simple and convenientmeans wherebyrbuildngs may be warmed by oil or gas heaters in asatisfactory manner and with superior Ventilating effect minimizing theintroduction of carbon monoxid into the room and maximizing theintroduction of pure heated air; and also providing for satisfactoryventilation in connection with the heatin arrangement.

The invention may be-carried out in various forms.

The accompanying drawings illustrate the invention.

Figure 1 is a fragmental plan partly in section of a furnace constructedin accordance with this invention. Fig. 2 is a fragmental sectionalelevation from line :v2-:v2 Fig. 1, showing the invention constructed asan oil burnin furnace. Fig. 3 is an ele- Vation on a re uced scale ofthe furnace shown in Fig. 2 as installed in the floor of a room to beheated. Fig. 4 is a broken elevation of a furnace embodying thisinvention-as employed with a gas heater.

The floor structure 1 of the room or apartment t-o be immediately heatedis provided with an orifice 2 which is supplied with a border 3 and aregister grating 4 that has the usual ventilation regulating dampers 5controlled by the usual foot-lever or handle 6. The border 3 isimpervious to air, exce t at the down draft orifices 7.

nside the floor orifice 2 is fitted an external casin 8 provided with abottom 9 and fastened y suitable means as nails 10 to the sillsll orother suitable portions of the floor structure. The casing bottom 9 isprovided with a central draft orifice l2 and the walls of the casing areprovided with Ventilating orifices 14 near the level of the easingbottom. [The outer edges of theborder 8 ex i, tend over the casing 8 andthe inner edges of said border extend over a frame formed of crossbars15 fastened to rails 16 that are supportedfbyybrackets 17 fixed bysuitable .means as screws jor nails 18 to the casing 8 and the floorstructure 11. The frame is further supfprted by screws 19 inserted downthroug the border 3 which may be of cast-iron or other suitable materialprovided with an inner marginal recess 20 in y rails 16 and extendsdownward from said f3.1 frame toward the bottom 9 of the outer casing 8;there being a Ventilating flue 2S formed between the casings 8 and 21,and extending entirely around the inner casing 21 which is provided withVentilating orifices 24 and with outwardly extending ballles ordeflectors 25 that are arranged above the level of said Ventilatingorifices 24 to direct the down-draft outwardly and down and Atheup-draft inwardly, so that the down-draft. and up-draft may both findexit from the flue through the orifices 24 into the inner casing.

The down draft orifices 7 communicate with the flue 23 and said flue isopen at its lower end to the interior of the inner casing 21 which issurrounded by the fiue passage 23.

The register grating 4 is loosely seated in its seat 20 and can belifted from the border 3, thus giving access to the interior of theinner casing, which is of sufficient diameter to receive a suitable oilheater 26 or gas heater 27 that are directly over the orifice 12 so asto spread the air entering through the orifice equally to all sidesofthe inner casing. The bottom 9 of the outer casing serves as a supportfor such heater and the oil heater 26 can be lowered into and raisedfrom the receptacle formed by the casing for the purpose of replenishingthe oil supply therein, and for caring for lighting and extinguishingsaid heater.

The oil burning heater 2G may be of any suit-able character and may beprovided with a handle 28 by which it may be lowered into or drawn outof the receptacle formed by t-he casings. On top of the oil heater aslightly elevated horizontal defiector plate 29 is provided and theupper end of the heater drum 30 is provided with perforations 31 toallow the escape of heated air beneath the deflector plate from theinterior of the oil burner. Perforations 32 in the drum are provided forthe first lateral blast of hot air and the deflector 29 provides for thesecond blast of such air.

llfl

The apparatus mav be installed in buildings in the Acourse oconstruction and also in completedl buildings and when 4it is desired towarm a room with an oil burnin furnace, the oil-heater 26 being su pliedwith oil and Wick and being lighte will be lowered into the compartmentwithin the casin the register grating 4 beinr remove for that purposeand then replaced.

'The heat from the heater causes a draft to arise inside the innercasing and the vacuum formed-'will be partly supplied by cold airflowing down through the down draft orifices 7 into the draft flue 23past the baffles or deflectors 25 and in through the ventilatin orifices24 that are atpor above the levelzof the top of the heater and theperforations 31 from which the hot air and the products of combustionwill be emitted from the oil heater into the inner casing to mingle withthe pure air from the orifices 24. The heat from the burner in theheater induces an upward draft through the flue 23 to the deflector 25and through the orifices 24 of the inner casing 21 outside the heater;the draft through the fille 23 passing through the orifices 24 beforecontamination from the products of combustion, said products issuingfrom the perforations 31 and beneath the deflector 29 and coxnininglinwith the cold and fresh air from the orifices 7 and 14. It is thus seenthat a circulation of air will be set up in the room; the heated airrising from the register grating, and the cold air flowing down throughthe border orifices 7, and that a reat volume of heated air will passinto t e room 33 through the register grating.

The o eration with the lgas heater is ractically t e same as that Justdescribe the diierencebeing that the gas heater is not required to be ofas eat length as the oil heater and it is supp ied with fuel through agas pipe 34 controlled by a valve 35 and its lever 36.

I claim:-

1. The `combination with a floor structure "having an orifice therein,of an external and internal casing let into thc ori tice and providedwith a flue between them; the external casing being provided with abottom and an inlet orlfice; the internal casing terminating above theinlet orifice and provided wit inlet orifices communicating with theflue; a border plate over the iiue provided with down draft orifices anda register supported by the border; and

a heater supported within the outer casing directly over the inletorifice and extending up into the inner casing.

2. A cabinet furnace comprising an ler'- ternal casing provided with abottom and having a draft orifice in such bottom and also provided withVentilating orifices in its walls; an inner casing open at its lower endand extending down into the external casing from the upper end of theexternal casing and forming therewith a flue, and provided with sideorifices and with dcfiectors over said side orifices; a border plateover said flue provided with down draft orifices to'supply air to saidfiue; and a register grating above the inner casing.

3. A cabinet furnace comprising an etc ternal casiixg provided with abottoni and having a draft orifice in such bottoni and also providedwith Ventilating orifices in its walls; an inner casing open at itslower end and extending down into the external casing from the upper endof the external casing and forming therewith a flue, and provided withside orifices and with defiectors over said side orifices; a borderplate over said fille provided with down draft orifices 'to supply airto said flue; a register grating above the inner casin and a heater inthe casing, rovided wit outlets for hotI blast above t e level of saidside orifices and deiicctors. f

In testimon whereof I have hereunto set my hand at s Angeles,California, this 15th dav of March, 1912.

PHINEAS J. MONTGOMERY.

In presence of- JAMES R. TowNssND, L. BELLE RICE.

Copies of `this patent may be obtained for five cents eaoh, byaddressing the Commissioner of Patents, Washington, D. C.

